Adjustable guide plate capable of changing air flow mixing mode

Abstract

The utility model discloses an adjustable flow guide plate capable of changing an airflow mixing mode. The adjustable flow guide plate comprises a main smoke air duct, a branch smoke air duct, a fixed flow guide plate, a rotary flow guide plate, a rotating shaft, a sealing bearing and a handle, the branch smoke air duct is mounted on the side part of the main smoke air duct; an inner cavity of the branch smoke air duct is communicated with an inner cavity of the main smoke air duct; the fixed guide plate is fixed in the inner cavity of the branch smoke air duct; the rotating guide plate is connected to a rotating shaft in the inner cavity of the branch smoke air duct; the two ends of the rotating shaft are connected to the outer wall of the branch smoke air duct through sealing bearings, one end of the rotating shaft extends out of the outer wall of the branch smoke air duct to be provided with a handle, and the rotating guide plate can be driven to rotate by rotating the handle. According to airflow pressure and flow, the direction of the rotating guide plate can be adjusted through the fixed guide plate and the rotating handle, the speed and direction of backflow airflow in the branch smoke and air ducts are adjusted, the backflow airflow and original airflow are distributed more evenly after being mixed, and a speed field and a temperature field are more balanced. The flow guide plate is simple in structure and reasonable in design, fills the blank of the flow guide plate, and is worthy of wide popularization and application.

Description

Technical Field

[0001] This utility model belongs to the technical field of heating furnace flue gas duct, and relates to an adjustable guide plate that changes the airflow mixing mode. Background Technology

[0002] With increasingly stringent requirements for flue gas temperature in heating furnaces in recent years, environmental regulations have become more stringent as well. Waste heat recovery systems for heating furnaces often require the installation of cold bypass, hot bypass, and flue gas recirculation. Flue gas recirculation involves installing a branch flue on the side of the main flue gas duct to mix the recirculated airflow from the branch flue with the original airflow from the main flue gas duct. However, because the recirculated airflow from the branch flue cannot be adjusted according to airflow pressure and flow rate, it is prone to flow deviation after entering the main flue gas duct, significantly impacting equipment efficiency and normal operation. Utility Model Content

[0003] The purpose of this invention is to provide an adjustable guide plate that changes the airflow mixing method. The guide plate can adjust the speed and direction of the return airflow according to the airflow pressure and flow rate, so that the return airflow mixes evenly with the original airflow, reduces the occurrence of flow deviation, and ensures the normal operation of the equipment.

[0004] The technical solution adopted in this utility model is as follows: the guide plate includes a main smoke duct, a branch smoke duct, a fixed guide plate, a rotating guide plate, a rotating shaft, a sealed bearing, and a handle; its characteristics are:

[0005] The branch flue is installed on the side of the main flue, and its inner cavity is connected to the inner cavity of the main flue.

[0006] The fixed guide plate is fixed inside the flue gas duct.

[0007] The rotating guide plate is connected to a rotating shaft inside the smoke duct cavity; both ends of the rotating shaft are connected to the outer wall of the smoke duct through sealed bearings, and one end of the shaft extends out from the outer wall of the smoke duct and is provided with a handle. By rotating the handle, the rotating guide plate can be driven to rotate.

[0008] Furthermore, the fixed guide vanes and the rotating guide vanes are arranged in parallel and at intervals, respectively.

[0009] Furthermore, both the fixed guide vane and the rotating guide vane are serrated.

[0010] Furthermore, ventilation holes are provided on both the fixed and rotating guide plates to enhance airflow mixing.

[0011] Furthermore, the handle is equipped with a locking device to fix the position of the rotating guide plate after it has rotated.

[0012] This invention allows for adjustment of the speed and direction of the recirculating airflow in the flue gas duct by fixing the guide plate and rotating the handle, based on airflow pressure and flow rate. This results in a more uniform distribution of the recirculating airflow after mixing with the original airflow, leading to a more balanced velocity and temperature field. This invention features a simple structure and reasonable design, filling a gap in the market for such guide plates and is worthy of widespread application. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 for Figure 1 Top view;

[0015] Figure 3 for Figure 2 AA sectional view.

[0016] In the diagram: 1 Fixed guide plate; 2 Rotating guide plate; 3 Shaft; 4 Sealed bearing; 5 Handle; 6 Main flue; 7 Branch flue; 8 Vent. Detailed Implementation

[0017] As shown in the figure, this utility model includes a main smoke duct 6, a branch smoke duct 7, a fixed guide plate 1, a rotating guide plate 2, a rotating shaft 3, a sealed bearing 4, and a handle 5. The branch smoke duct 7 is installed on the side of the main smoke duct 6, and its inner cavity communicates with the inner cavity of the main smoke duct 6. The fixed guide plate 1 is fixed inside the inner cavity of the branch smoke duct 7, and its two ends are fixed to the inner wall of the branch smoke duct 7. The rotating guide plate 2 is connected to the rotating shaft inside the inner cavity of the branch smoke duct 7. The two ends of the rotating shaft 3 are connected to the outer wall of the branch smoke duct 7 through the sealed bearing 4, and one end of the shaft extends from the outer wall of the branch smoke duct 7 and is provided with a handle 5. Rotating the handle 5 drives the rotating guide plate 2 to rotate.

[0018] The fixed guide plate 1 and the rotating guide plate 2 are multiple plates arranged in parallel and at intervals.

[0019] The fixed guide plate 1 and the rotating guide plate 2 are sawtooth shaped.

[0020] The fixed guide plate 1 and the rotating guide plate 2 are provided with ventilation holes 8, which can enhance the mixing of airflow.

[0021] The handle 5 is equipped with a locking device to fix the position of the rotating guide plate 2 after rotation.

Claims

1. A variable guide vane for changing the mixing mode of air flow, comprising a main flue (6), a branch flue (7), a fixed guide vane (1), a rotating guide vane (2), a rotating shaft (3), a sealing bearing (4), and a handle (5); characterized in that: the branch flue (7) is installed on the side of the main flue (6) and its inner cavity is communicated with the inner cavity of the main flue (6); the fixed guide vane (1) is fixed in the inner cavity of the branch flue (7); the rotating guide vane (2) is connected to the rotating shaft (3) in the inner cavity of the branch flue (7); the rotating shaft (3) is connected to the outer wall of the branch flue (7) through the sealing bearing (4) at both ends, and one end of the rotating shaft (3) extends out of the outer wall of the branch flue (7) and is provided with the handle (5); the rotating guide vane (2) can be rotated by rotating the handle (5). The fixed guide vane (1) and the rotating guide vane (2) are respectively arranged in parallel and spaced apart. The fixed guide vane (1) and the rotating guide vane (2) are in the shape of a sawtooth. Ventilation holes (8) are formed in the fixed guide vane (1) and the rotating guide vane (2).

2. The adjustable guide vane of claim 1, wherein: The handle (5) is provided with a clamping device to fix the position of the rotating guide vane (2) after rotation.

3. The adjustable guide vane of claim 1, wherein: ​ 4. The adjustable guide vane of claim 1, wherein: ​ 5. The adjustable guide vane of claim 1, wherein: ​

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